S Type Bellows Axial Stiffness Analysis And Vibration Characteristic Research

S type in the field of welded metal bellows mechanical seal at present stage is a kind of advanced sealing parts, it replaces the spring and auxiliary seal ring, is widely used in high parameters and corrosion resistance, and other harsh working conditions. This article in view of the xinjiang wusu shinco northern co., LTD., provide S type welded metal bellows(DN35 DN55 DN100 three series), the axial stiffness and vibration characteristic was studied.First of all, on the basis of the current domestic formulated according to the American EJMA standard corrugated tube axial stiffness calculation formula to calculate, it is concluded that the axial stiffness of the bellows values, and fill in the form, observe the corrugated tube axial stiffness characteristic value.Second, in the computer for corrugated GuanJianMo and ANSYS Workbench software for simulation analysis of the stiffness value, the stiffness values after finishing, fill in the form and its theoretical analysis, from the theoretical value to verify the correctness of the simulation analysis method.Then, the experiment was carried out on the axial stiffness of the bellows, and find out the test value. The corrugated pipe, comparing the theoretical value and simulation value and experiment analysis, the change of the stiffness value of bellows.Finally, the whole vibration characteristic analysis of the bellows.By collating concluded that overall axial stiffness value of corrugated pipe, the theoretical value is higher than the simulation value and test value; Calculate DN35, two DN100 series axial stiffness of the bellows, available test, instead of a real simulation and calculation DN55 series stiffness of the bellows, if use simulation instead of the real test will generate large error. Corrugated pipe vibration frequency and vibration amplitude, the relation with load on its impact is not big.